Molding-machine for building-bricks.



PATENTED MAY 15, 1906.

A. G. MULLER.

MOLDING MACHINE FOB. BUILDING BRICKS. APPLICATION FILED APB.17. 1905.

i'zg. 1.

Fig.3. f f a H H II II I] "4" 7 g g M f s 1 n IHFQUFIFIE m uumw llz 'irma -as: a g g 1 d I 6% $24,73 M n Zea; zlrzlkm 1i! pr ANDREAS CHRISTIAN MULLER, OF MOGELTONDERN, GERMANY.

MOLDING-MACHINE FOR BUILDING-BRICKS.

Specification of Letters Patent.

Patented May 15, 1906.

Application filed April 17, 1905. Serial No. 256,056.

To all whom it may concern: Be it known that I, ANDREAS CHRIsTIA MULLER, a subject of the German Emperor, and a resident of Mogeltondern, Germany, have invented a certain new and useful Molding-Machine for Building-Bricks, of which the following is a specification.

The object of this invention is to provide a molding-machine for building-bricks by means of which a large number of simultaneously-made bricks may be withdrawn simultaneously from the side of the mold without great difficulty.

In the known moldin -machines for building-bricks the molded b ocks must be raised from the fixed mold, or the latter must be withdrawn from the stationary blocks, or the blocks must be sep arately withdrawn laterally from the mold. All these arrangements allow only the manufacture of a limited number of bricks, as the weight of the bricks or of the mold and the produced friction would be excessive for alarger number of simultaneouslymolded bricks. In order to remove the bricks laterally from the mold, much time and trouble are required. According to the present invention the wet bricks completely molded are withdrawn laterally from the mold by means of a chain mechanism which requires only very little force, so that a single workman may easily be able to takefrom the mold simultaneously thirty bricks.

In the annexed drawings, iven by way of example, is shown a form of this invention.

In the drawings, Figure 1 shows an elevation of the machine, the mold being shown in section. Fig. 2 is a top plan view of same, the mold being removed. Fi 3 shows a side elevation and a plan view of the mold proper. Fig. 4 shows an elevation and aplan view of two angle metal sheets e.

An iron framework a, supported by four legs, carries the bearings for two exterior shafts c and a middle shaft, u on which are keyed the sprocket-wheels 4, 7c m n 0 g and a cable-drum 1". With the aid of these wheels and the drum the molded bricks while resting upon their supports are withdrawn from the mold in the following manner: The molding-frame, which is screwed to the frame a, is open at its top and its bottom and may be opened longitudinally. It is therefore only composed of a middle longitudinal rib provided with the transversal ribs 9 and of hinged longitudinal sides. (See Fig. 3.) Four sheet-metal plates bent to form angle-pieces e and upon which rest planks f are laterally slid in the mold, the vertical branches of the angle-pieces 6 projecting into the mold. To this effect these vertical branches of the squares e must be provided with slots 8, intended to be engaged by the ribs 9. The lateral walls of the mold are then closed and the mold filled with cement-mortar which has been Worked by the stamper. Then the upper surface is smoothed and side walls are again opened. In order to draw forward the square metal sheets e with the planks f and the blocks which rest on the latter, a chain is connected to each square e and is conveyed over the corresponding chain-pulley-thus, for instance, from one square over the pulley t to the pulley 0, to which the chain is fixed. When the shaft (1 is rotated, the chains are pulled and draw the square metal sheets, with the planks and the blocks, from the mold. The rotation of the shaft (1 is effected .by means of a cable wound round the cable-drum r and connected to a treadle h, which is actuated by the wei ht of the workman.

aving now fully described my said invention, what I claim, and desire to secure by Letters Patent, is-

In a molding-machine for building-bricks the combination with a suitable framework of a moldin -frame, comprising a central longitudinal ri lateral ribs starting therefrom and hinged longitudinal side walls, metal squares, supportin planks and adapted to be laterally slid in t e mold, slots provided in the vertical flanges intended to be engaged by the lateral ribs of the mold, chains attached to the outside of the squares, grooved guide-pulleys for the chains, chain-drums mounted upon a shaft and to which the chains are connected and means for rotating the said shaft substantially as and for the purpose set forth.

In testimony whereof I have hereunto set my hand in presence of two witnesses.

ANDREAS CHRISTIAN MULLER.

Witnesses JULIUS RoPKE, FERDINAND RoHRoEsrATE. 

